Tonga earthquakes

M4.2 earthquake 146 km E of ‘Ohonua, Tonga

A magnitude 4.2 earthquake struck 146 km E of ‘Ohonua, Tonga on Sun, Mar 25, 2018, 8:43 PM GMT+13 (07:43 UTC), 10 km (6 mi) below the surface.

A larger quake followed: M5.6 104 km ENE of ‘Ohonua, Tonga. This one was a foreshock.

Nuku‘alofa forecastMore in Tonga

Map

Where this earthquake was located, with the others nearby. Select one for its page.

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The earthquake

Magnitude
4.2 (mb, body-wave), light
Magnitude from
USGS National Earthquake Information Center
Local time
UTC
2018-03-25 07:43:49 UTC
Depth
10.0 km (6.2 mi), shallow
Epicenter
21.082° S, 173.564° W
Region
Tonga
Tsunami flag
No
Status
Reviewed by a seismologist

Did you feel it?

No one has reported feeling this quake to the USGS.

How well it is located

Reviewed by a seismologist.

Location uncertainty
About 7.9 km horizontally, 1.9 km in depth
Magnitude uncertainty
±0.13
Depth from
Operator assigned
Station coverage gap
120°
Stations used
17

Nearest places

Distance and direction from each place to the epicenter, with its forecast.

Nearby

Within 100 km, magnitude 1.5 and up: 10 in the 60 days after this one and 1 in the 30 days before it.

After

  1. 5.0110 km SE of Pangai, Tonga · 3107 days ago · 10 km deep · 53 km away
  2. 4.487 km SE of Pangai, Tonga · 3086 days ago · 10 km deep · 81 km away
  3. 4.3101 km E of ‘Ohonua, Tonga · 3073 days ago · 10 km deep · 47 km away
  4. 5.0120 km ENE of ‘Ohonua, Tonga · 3071 days ago · 10 km deep · 45 km away
  5. 5.5121 km E of ‘Ohonua, Tonga · 3066 days ago · 10 km deep · 26 km away
  6. 4.9102 km SE of Pangai, Tonga · 3065 days ago · 26 km deep · 69 km away
  7. 4.677 km SSE of Pangai, Tonga · 3060 days ago · 10 km deep · 86 km away
  8. 5.6104 km ENE of ‘Ohonua, Tonga · 3059 days ago · 10 km deep · 44 km away
  9. 5.0118 km ENE of ‘Ohonua, Tonga · 3059 days ago · 10 km deep · 35 km away
  10. 4.796 km E of ‘Ohonua, Tonga · 3058 days ago · 35 km deep · 55 km away

Before

  1. 4.5110 km E of ‘Ohonua, Tonga · 3130 days ago · 10 km deep · 43 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event us1000db0w. Read Sat, Oct 3, 2026, 6:20 PM UTC.